Midmark M11 - Page 15

English-15
004-1032-00
TP210 Rev. A
© 2012 Midmark Corp. | 60 Vista Drive Versailles, OH 45380 USA | 1-800-643-6275 | 1-937-526-3662 |
[Revised: 8/15/17]
Troubleshooting Chart - continued
Problem Display / Symptom Cause Check Action
Unit not building
Temperature or Pressure.
Unit not building Temperature or
Pressure.
Heating element malfunctioning. Inspect heating element. Heating
element should lay flat in the bottom
of the chamber. Heating Element
should be free of any flaking / pitting.
Perform: Heating Element Resistance Test
(should read 9-11 Ω)
Replace Heating Element
Inspect heating element wires for corrosion or if
disconnected.
Reconnect / replace heating element
wires.
Loose / damaged wire connection.
Check wire connections at high-limit
thermostat and at J5 on Main PC Board.
Secure / repair loose or damaged wire
connections.
PC Board malfunctioning.
Perform: Heating Element Supply
Voltage Test (With harness attached
to leads should have line voltage in test mode)
Replace Main PC board.
Perform: Main PC Board Relay Test (Check TP1 &
TP2 for an acceptable range: 10 to 14 VDC)
Perform: Main PC Board Pressure Transducer
Voltage Test (Acceptable range: 4.0 to 6.0 VDC)
Unplug / Replug
Unplug / Replug Verify weekly & monthly maintenance has been
performed by customer. Refer to User Guide.
Perform monthly maintenance.
High Limit Thermostats open. Verify if unit still overheated. Unplug unit for 60 seconds, then plug
unit into a dedicated, properly rated circuit.
Allow unit to cool for 30 minutes.
Office running back to back cycles. Check if operator is running consecutive
cycles without completing the DRY cycle.
Complete full cycle.
If the unit skips the Fill mode...
Tray rack / tray plate not installed
properly.
Inspect tray rack / tray plate for proper
installation. (The 45 degree angled end
of tray plate must be positioned upward
and to the back of the chamber)
Install tray rack / tray plate properly.
(M11) Mesh filter not in place. Verify filter is in place. Re-Install filter.
Water Level sensor malfunctioning /
dirty.
Inspect water level sensor.
(Check for residual moisture)
Clean / Dry water level sensor.
(Clean with Speed-Clean and scotch bright pad)
Verify if filling or skipping fill.
(“filling chamber” will display on display
for 30-60 seconds)
Perform: Water Level Sensor Testing
Replace water level sensor.
If the unit completes the Fill mode…
Sterilizer is not level.
(remove tray / trays)
Verify support surface is level. Place sterilizer on a level support
surface.
Verify water on all sides of chamber are equal.
Pressure Leaks. Check for loose / worn door and dam
gaskets or water leaking around door.
Verify door and dam gaskets are
installed properly.
(Replace gasket kit 1x year)
Clean / Replace gaskets.
Check all plumbing fitting connections for
leakage.
Tighten or replace fittings.
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Style A